Low-carbon natural air oxygen fermentation tank device in cold region

Abstract

A kind of low-carbon cold region natural air admission aerobic fermentation tank device, including air inlet, fermentation tank, the upper portion of the fermentation tank is connected air inlet, air inlet outside has air inlet lip, air inlet inside has air guide pipeline, air guide pipeline inside is connected dust screen, air guide pipeline lower portion is connected air supplement pump, by preheating, the temperature of air admission is promoted to the suitable range of microorganism, improves the decomposition rate of organic matter;Preheating reduces the relative humidity of air, avoids material to be blocked due to excessive wet, and dry hot air promotes material loose, maintains porosity, ensures oxygen diffusion efficiency;By using tank heat preheating, energy self-sufficiency is realized, and operating cost is reduced;Heat production peak is preheated sufficiently, avoid overheating when heat production trough, reduce manual intervention, and carbon footprint is reduced.

Description

Technical Field

[0001] This utility model relates to the field of aerobic fermentation, and in particular to a low-carbon, cold-region natural air intake aerobic fermentation tank device. Background Technology

[0002] When natural ventilation is used to supplement oxygen to aerobic fermenters in cold regions during winter, the direct use of cold air can cause the temperature inside the tank to drop or even freeze, resulting in a decrease in the metabolic rate of microorganisms, a longer fermentation cycle, and condensation of water vapor inside the tank, leading to material clumping and hindering oxygen diffusion. Preheating methods such as electric heaters or heat exchangers are usually used for preheating during the air intake stage, which consumes a certain amount of energy. However, a considerable amount of heat is generated inside the fermenter during fermentation, and current methods lack the ability to utilize the heat inside the tank for air intake preheating. Summary of the Invention

[0003] This invention addresses the aforementioned shortcomings of existing technologies by providing a low-carbon, cold-region natural air intake aerobic fermentation tank device that achieves energy self-sufficiency and reduces operating costs through preheating with heat inside the tank; fully preheats during peak fermentation heat production and avoids overheating during off-peak periods, thereby reducing human intervention and lowering the carbon footprint.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A low-carbon, cold-region natural air intake aerobic fermentation tank device includes an air inlet and a fermentation tank. The upper part of the fermentation tank is connected to the air inlet, the outer side of the air inlet has an air inlet lip, the inner side of the air inlet has an air intake pipe, the inner side of the air intake pipe is connected to a dustproof net, and the lower part of the air intake pipe is connected to a make-up air pump.

[0006] The fermenter described in this invention is provided with a mechanical stirring rack inside and a preheating pipeline outside the mechanical stirring rack, with the preheating pipeline located inside the fermenter.

[0007] The preheating pipeline of this invention is connected to an air inlet at the top and an air supply pipeline at the bottom. The air supply pipeline passes through the fermentation tank and connects to a backflush pump.

[0008] The gas supply pipeline of this invention has multiple air holes on its outer side, which are evenly distributed on the outer side of the gas supply pipeline. There are two anti-clogging covers on the inner side of the air holes, which are symmetrically arranged. An oxygen sensor is connected to the inner side of the fermenter, and a gas replenishment pump switch valve is connected to the outer side of the fermenter. Beneficial effects

[0009] This invention raises the intake air temperature to a suitable range for microorganisms through preheating, avoiding a sudden drop in the temperature inside the tank caused by the direct entry of cold air, thus maintaining the activity of the microbial community and improving the decomposition rate of organic matter.

[0010] This invention preheats the air to reduce relative humidity, thereby reducing water vapor condensation inside the tank and preventing materials from clumping due to excessive moisture. In addition, the dry and hot air promotes the loosening of materials, maintains porosity, and ensures oxygen diffusion efficiency.

[0011] This invention achieves energy self-sufficiency by using in-tank heat preheating, eliminating the need for external electric heating and reducing operating costs; it fully preheats during peak fermentation heat production and avoids overheating during off-peak periods, reducing human intervention and lowering the carbon footprint. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a low-carbon, cold-region natural air intake aerobic fermentation tank device according to the present invention.

[0013] Figure 2 This is a schematic diagram of the air inlet structure of a low-carbon, cold-region natural air intake aerobic fermentation tank device according to the present invention.

[0014] Figure 3 This is a partial structural diagram of the gas supply pipeline of a low-carbon, cold-region natural air intake aerobic fermentation tank device according to the present invention.

[0015] Figure 4 This is a schematic diagram of the vent structure of a low-carbon, cold-region natural air intake aerobic fermentation tank device according to the present invention. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0017] Example 1:

[0018] A low-carbon, cold-region natural air intake aerobic fermentation tank device includes an air inlet 01 and a fermentation tank 12. The upper part of the fermentation tank 12 is connected to the air inlet 01. The outer side of the air inlet 01 has an air inlet lip 09. The inner side of the air inlet 01 has an air intake pipe 11. The inner side of the air intake pipe 11 is connected to a dustproof net 10. The lower part of the air intake pipe 11 is connected to a supplementary air pump 02.

[0019] Example 2:

[0020] The fermenter 12 of this utility model is provided with a mechanical stirring rack 04 on the inner side and a preheating pipe 03 on the outer side of the mechanical stirring rack 04. The preheating pipe 03 is located inside the fermenter 12.

[0021] Example 3:

[0022] The preheating pipeline 03 of this utility model is connected to the air inlet 01 at the top and the air supply pipeline 06 at the bottom. The air supply pipeline 06 passes through the fermentation tank 12 and is connected to the backflush pump 08.

[0023] Example 4:

[0024] This utility model has multiple air holes 61 on the outer side of the gas supply pipeline 06, which are evenly distributed on the outer side of the gas supply pipeline 06. There are two anti-clogging covers 62 on the inner side of the air holes 61, which are symmetrically arranged. An oxygen sensor 05 is connected to the inner side of the fermentation tank 12, and a make-up air pump switch valve 07 is connected to the outer side of the fermentation tank 12. Under the combined action of the preheating pipeline 03 and the gas supply pipeline 06, the heat generated in the fermentation tank 12 during the fermentation process is used to raise the air temperature after the outside natural wind enters the preheating pipeline 03, so that the fermentation tank is not affected by freezing during winter operation. Under the action of the anti-clogging covers 62, the unobstructed flow of air holes 61 is ensured, and the material is effectively prevented from clogging the air holes.

[0025] Example 5:

[0026] Installation steps: With the combined action of preheating pipe 03 and air supply pipe 06, the heat generated during fermentation in fermenter 12 raises the temperature of the air entering preheating pipe 03, preventing freezing during winter operation. Air supply pipe 06 has evenly distributed vents 61. After preheating in preheating pipe 03, the air is evenly released through vents 61 due to thermal pressure, accompanied by mechanical stirring to thoroughly mix the material and oxygen, preventing insufficient oxygen supply in the central area or short-circuiting of the airflow at the edges, thus preventing laminar diffusion. Simultaneously, the anti-clogging cover 62 ensures the unobstructed flow of vents 61. Effectively prevents material from clogging the pores; during fermentation, microorganisms decompose organic matter and release heat, causing the internal temperature of the fermenter 12 to rise. The preheating pipe 03 uses this heat to heat the air; moreover, the low density of high-temperature gas forms an upward airflow inside the tank. When the hot air at the top is discharged, a pressure difference is generated inside and outside the fermenter 12, and the air in the gas supply pipe 06 is naturally drawn in to replenish it, completing the natural air intake method of aerobic fermentation; by setting the preheating pipe 03 to directly absorb the residual heat inside the fermenter 12, the gas supply pipe 06 is connected to its end for gas replenishment; in addition, a backflush air pump 08 is set to periodically clean the openings of the gas supply pipe 06 to avoid blockage and short circuit of airflow.

[0027] Preheating raises the inlet air temperature to a suitable range for microorganisms, preventing a sudden drop in tank temperature caused by direct entry of cold air, thus maintaining the activity of the microbial community and increasing the decomposition rate of organic matter. Preheating also reduces relative humidity, minimizing water vapor condensation inside the tank and preventing material from clumping due to excessive moisture. Furthermore, hot, dry air promotes material loosening, maintains porosity, and ensures efficient oxygen diffusion. By using internal heat for preheating, energy self-sufficiency is achieved, eliminating the need for external electric heating and reducing operating costs. Sufficient preheating during peak fermentation heat production and avoiding overheating during off-peak periods minimizes human intervention and reduces the carbon footprint.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A low-carbon, cold-region natural-intake aerobic fermentation tank device, characterized in that: The fermenter includes an air inlet (01) and a fermentation tank (12). The upper part of the fermentation tank (12) is connected to the air inlet (01). The outer side of the air inlet (01) has an air inlet lip (09). The inner side of the air inlet (01) has an air intake pipe (11). The inner side of the air intake pipe (11) is connected to a dustproof net (10). The lower part of the air intake pipe (11) is connected to a supplementary air pump (02). The inner side of the fermentation tank (12) is equipped with a mechanical stirring rack (04). The outer side of the mechanical stirring rack (04) is equipped with a preheating pipe (03). The preheating pipe (03) is located inside the fermentation tank (12).

2. The low-carbon, cold-region natural air intake aerobic fermentation tank device according to claim 1, characterized in that: The preheating pipeline (03) is connected to the air inlet (01) at the top and to the air supply pipeline (06) at the bottom. The air supply pipeline (06) passes through the fermenter (12) and is connected to the backflush pump (08).

3. The low-carbon, cold-region natural air intake aerobic fermentation tank device according to claim 2, characterized in that: The gas supply pipeline (06) has multiple air holes (61) on its outer side, and the air holes (61) are evenly distributed on the outer side of the gas supply pipeline (06).

4. The low-carbon, cold-region natural air intake aerobic fermentation tank device according to claim 3, characterized in that: The air hole (61) has two anti-clogging covers (62) inside. The anti-clogging covers (62) are symmetrically arranged. The oxygen sensor (05) is connected inside the fermentation tank (12), and the air supply pump switch valve (07) is connected outside the fermentation tank (12).

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